As compared to Number 16, Number 18 was more natural and smart. She smiled before talking and one wouldn't be able to tell that she was one of the experimental targets.
If they had met in a different place, Lou Cheng would definitely be able to sense the creepiness and uniqueness of Number 4, Number 6 till Number 16. However, he would probably see Number 18 as just any other ordinary physical invulnerability expert.
Perhaps this is the reason why Number 16 believed that she is stronger than him... With his seniors around, although Lou Cheng was filled with rage, he did not act rashly. Instead, he turned his attention to think about other questions to maintain his Ice Heart.
After hearing what Number 18 had said, the emaciated Ji Jianzhang took a deep look at her before sweeping his gaze at Lin Que. After which, he laughed and said,
